Find The Value Of 2

Question

Use the given function:
f(x) = {10x−3,x/2,if −1≤x<2if 2≤x≤4
Find the value of f(2)

Answer 1

You have a piecewise function; one definition pertains when x is in the interval [-1,2) and a different definition pertains when x is in the interval [2,4].

 

f(x) = 10x−3, if −1≤x<2

          x/2,       if 2≤x≤4  *** this one applies when x = 3. f(2) = 1.

Answer 2

If 2≤x≤4 then f(x) =x/2  (You should use this formula for this partial function because the condition says if 2 is smaller than or equal to x and........  then the function would be x/2)

 

Hence, f(2)=2/2=1

Let me know if you have any further clarification